Bollywood superstar Salman Khan, Amitab Bachan, Kapil Sharma and many others had very less hair in there front area of head.

But suddenly they fixed it.

Sample:

https://i.ytimg.com/vi/iufk_T3GRVg/hqdefault.jpg

https://www.bollywoodpapa.com/wp-content/uploads/2015/08/Amitabh-Bachchan11.jpg

https://qph.ec.quoracdn.net/main-qimg-ec349ddd274914c1688d6276d2965175

 

I want to know what exactly they did so that i can let me brother, uncles fix that hair issue.

Please advise.